Choi Yeon-jun, better known by the mononym Yeonjun, is a South Korean
singer-songwriter born on September 13, 1999, in Seongbuk District, Seoul, South
Korea. He trained under Big Hit Entertainment for four years and was known as
the company's "legendary trainee" due to his consistent top rankings in dance,
vocal performance, and rap during monthly evaluations. Yeonjun is a member of
the boyband Tomorrow X Together, which debuted in March 2019. Yeonjun has also
been involved in various projects outside of Tomorrow X Together. He made his
acting debut in the 2020 television series ...